Blackwood, Texas: After falling through a hole in the ground, a young boy is infected by the alien Black Oil. One week later, in Dallas, a federal building is bombed by terrorists, killing five people, including the Blackwood boy. Mulder and Scully, now part of an FBI anti-terrorism unit, learn that the boy as well as three other victims were dead even before the bombing, cause of death: an alien virus. In the Texas desert, the agents find an agricultural complex that may hold the key to unlocking the government conspiracy surrounding the extraterrestrials and their lethal virus which Mulder and Scully must fight the government in a conspiracy and find the truth about an alien colonization of Earth.